Thermal Care Accuchiller KSE, Operation, Installation, And Maintenance Manual

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CAUTION: When your application requires the use of 
glycol, use industrial grade glycol specifically designed 
for heat transfer systems and equipment. Never use 
glycol designed for automotive applications. 
Automotive glycols typically have additives engineered 
to benefit the materials and conditions found in an 
automotive engine; however, these additives can gel 
and foul heat exchange surfaces and result in loss of 
performance or even failure of the chiller. In addition, 
these additives can react with the materials of the 
pump shaft seals resulting in leaks or premature pump 
failures. 

WARNING: Ethylene Glycol is flammable at higher 
temperatures in a vapor state. Carefully handle this 
material and keep away from open flames or other 
possible ignition sources. 

Step 3 - Check Condenser 

It is important to verify the chiller will have adequate 
condenser cooling for proper chiller operation. Make 
sure all condenser coils are clean and free of debris. 
 

Step 4 – Check Refrigerant Valves 

During shipment or installation it is possibe valves 
were closed. Verify that all refrigerant valves are 
open. 
 

Step 5 – Check Low Temperature Alarm 

Make sure the Low Temperature Alarm Set Point is 
set appropriately for the operating conditions of the 
chiller. The Low Temperature Alarm setting is in a 
password protected menu of the chiller controller. 
Refer to the control section of this manual for 
instructions on how to access this menu. The Low 
Temperature Alarm should be set at 10°F below the 
minimum chilled water temperature setting that the 
chiller will be operating. Also ensure the process 
coolant has sufficient freeze protection (glycol) to 
handle at least 5°F below the Low Temperature 
Alarm setting. All chillers are shipped from the 
factory with the Low Temperature Alarm set at 35°F. 
This is done to protect against a possible freeze-up if 
no glycol has been added to the coolant. Once the 
proper glycol solution has been added, the Low 
Temperature Alarm can be adjusted to the 
appropriate setting. 
 

CAUTION: The manufacturer’s warranty does not 
cover the evaporator from freezing. It is vital that the 
Freezestat is set properly. 

Step 6 – Turn On Control Power 

Turn on the control power by turning the control 
power switch to "On". The panel displays should now 
be illuminated. Due to extreme ambient 
temperatures that the unit may be exposed to 
during shipment and installation, you may encounter 
a High Refrigerant Pressure alarm when you turn on 
the control power. If this is the case, reset the alarm. 
Do not proceed until all alarms have been reset and 
no further alarm conditions are present. 
 

Step 7 – Establish Coolant Flow 

Establish flow through the chiller. 
 

Note: The compressor will not start as long as the flow switch is 
open. A positive flow must be established through the evaporator 
before the compressor can operate. 

 
Set water flow using a discharge throttling valve or 
flow control valve (by others). The valve should be 
the same size as the To Process connection of the 
chiller. Standard chillers are designed for 
approximately 2.4 gpm/ton of nominal capacity. A 
significant increase in flow beyond this in a standard 
chiller may result in excessive pressure loss and 
negatively impact chiller efficiency and in extreme 
cases may cause premature wear or damage of 
internal components.